Chemistry & Earth Sciences: المرسلات الحديثة
السجلات المعروضة 181 -- 200 من 556
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Synthesis and electrochemical characterization of Cr-doped lithium-rich Li1.2Ni0.16Mn0.56Co0.08-xCrxO2 cathodes
( Springer Nature , 2018 , Article)Lithium-rich layer oxide, Li1.2Ni0.16Mn0.56Co0.08O2 (NMC), is a potential cathode candidate for high-energy density batteries. Issues such as cycling stability, rate performance, and cost are yet to be overcome before ... -
Electrochemically stable tunnel-type α-MnO2-based cathode materials for rechargeable aqueous zinc-ion batteries
( Frontiers Media , 2023 , Article)The purpose of this study is the synthesis of α-MnO2-based cathode materials for rechargeable aqueous zinc ion batteries by hydrothermal method using KMnO4 and MnSO4 as starting materials. The aim is to improve the ... -
Experimental and DFT/TD-DFT computational investigations of the solvent effect on the spectral properties of nitro substituted pyridino[3,4-c]coumarins
( Elsevier , 2020 , Article)The UV/Vis absorption characteristics of newly synthesized pyridino[3,4-c] coumarins in different neat solvents were investigated experimentally and computationally. It is noted that the nitro-substituted pyridocoumarins ... -
DMAP-Catalyzed Reaction of Diethyl 1,3-Acetonedicarboxylate with 2-Hydroxybenzylideneindenediones: Facile Synthesis of Fluorenone-Fused Coumarins
( Thieme Gruppe , 2021 , Other)The base-catalyzed reaction of diethyl 1,3-acetonedicarboxylate with 2-hydroxybenzylidene indenediones was studied. The reaction provides a facile and expeditious protocol for the synthesis of natural product inspired ... -
Mechanochemical Transformation of CF3 Group: Synthesis of Amides and Schiff Bases
( Wiley , 2021 , Article)We communicate two mild, solvent-free mechanochemical coupling transformations of CF3 group with nitro compounds into amides or Schiff bases employing Ytterbia as a catalyst. This process proceeds via C−F bond activation, ... -
Mechanochemical Defluorinative Arylation of Trifluoroacetamides: An Entry to Aromatic Amides
( American Chemical Society , 2022 , Article)The amide bond is prominent in natural and synthetic organic molecules endowed with activity in various fields. Among a wide array of amide synthetic methods, substitution on a pre-existing (O)C-N moiety is an underexplored ... -
Insights into the degradation mechanism of PET and PP under marine conditions using FTIR
( Elsevier , 2023 , Article)Plastics possess diverse functional properties that have made them extremely desirable. However, due to poor waste management practices, large quantities eventually end up in the oceans where their degradation begins. ... -
Rational design of porous binary Pt-based nanodendrites as efficient catalysts for direct glucose fuel cells over a wide pH range
( Royal Society of Chemistry , 2017 , Article)The development of porous bi-metallic Pt-based nanocrystals (NCs) as efficient catalysts for the glucose oxidation reaction (GOR) over a wide pH range is still a grand challenge. Triggered by this challenge, we report the ... -
Controlled design of PtPd nanodendrite ornamented niobium oxynitride nanosheets for solar-driven water splitting
( Royal Society of Chemistry , 2018 , Article)Developing efficient photocatalysts for the water splitting reaction is crucial in a fuel cell reaction. Herein, we present a facile road-map for one-pot fabrication of PtPd nanodendrite (ND) ornamented niobium oxynitride ... -
Highly active, durable and pH-universal hybrid oxide nanocrystals for efficient oxygen evolution
( Royal Society of Chemistry , 2017 , Article)The development of an active, durable, and low-cost catalyst remains hitherto a grand challenge in energy conversion technologies. Herein, hybrid Ptx-NiMnO3 nanocrystals (NCs) (x = 0.1, 0.5, and 1.0 mM) were synthesized ... -
Mineralization of Riluzole by Heterogeneous Fenton Oxidation Using Natural Iron Catalysts
( MDPI , 2022 , Article)Fenton (H2O2/Fe2+) system is a simple and efficient advanced oxidation technology (AOT) for the treatment of organic micropollutants in water and soil. However, it suffers from some drawbacks including high amount of the ... -
Porous dendritic BiSn electrocatalysts for hydrogenation of 5-hydroxymethylfurfural
( Royal Society of Chemistry , 2022 , Article)The electrocatalytic hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF) is an alternative to conventional heterogeneous catalysis with H2 at high temperatures and pressures. Although Ag ... -
Catalytic activity of photocharged binary TiO2 and WO3 membrane filters: Effect of Al2O3 interlayer on direct vs. mediated electron transfers
( Elsevier , 2022 , Article)One of the challenges facing the practical application of photocatalysis is the termination of catalytic reactions in the absence of irradiation. This study synthesizes photo-charged TiO2/WO3 (TW) and TiO2/Al2O3/WO3 (TAW) ... -
Fluorescent Zn(II)-Based Metal-Organic Framework: Interaction with Organic Solvents and CO<inf>2</inf> and Methane Capture
( MDPI , 2022 , Article)Adsorption of carbon dioxide (CO2), as well as many other kinds of small molecules, is of importance for industrial and sensing applications. Metal-organic framework (MOF)-based adsorbents are spotlighted for such applications. ... -
Thermally assisted efficient electrochemical lithium extraction from simulated seawater
( Elsevier , 2022 , Article)Extracting lithium electrochemically from seawater has the potential to resolve any future lithium shortage. However, electrochemical extraction only functions efficiently in high lithium concentration solutions. Herein, ... -
Versatile Bifunctional and Supported IrNi Oxide Catalyst for Photoelectrochemical Water Splitting
( MDPI , 2022 , Article)Designing a high-performance electrocatalyst that operates with photon-level energy is of the utmost importance in order to address the world’s urgent energy concerns. Herein, we report IrNi nanoparticles uniformly distributed ... -
ZiF-8 induced carbon electrodes for selective lithium recovery from aqueous feed water by employing capacitive deionization system
( Elsevier , 2022 , Article)The demand for lithium (Li) will grow from about 500,000 metric tons of lithium carbonate equivalent in 2021 to 3–4 million metric tons in 2030. To meet the Li demand, the separation of Li-mixed monovalent and divalent ... -
Bromate reduction by ultraviolet light irradiation using medium pressure lamp
( Taylor & Francis , 2013 , Article)Bromate reduction in water by ultraviolet irradiation using medium-pressure lamps (UV-M) emitting light in the range of 200-600 nm has been investigated. Effects of certain experimental parameters including the initial ... -
Optical and electrical properties of porous silicon impregnated with congo red dye
( American Institute of Physics , 2013 , Article)Incorporation of molecules into porous silicon (PS) matrix is of particular interest for potential utilization in hybrid organic-semiconductor devices. In this study, the incorporation of Congo Red molecules inside luminescent ... -
Nitrate removal from water using UV-M/S2O42- advanced reduction process
( Springer , 2013 , Article)In this work, a new process called advanced reduction process (ARP) was used for nitrate removal from water. This ARP process combines sodium dithionite as reducing agent with ultraviolet irradiation using medium pressure ...